2 oz gin or vodka (I prefer gin)
6 oz fresh squeezed/strained grapefruit juice
.5 oz real maple syrup
Pinch of salt
Springs of rosemary for serving
(1) Add everything to a 250ml bottle (swing top is best) and shake until combined.
(2) Chill well (a couple of hours in the cold part of the fridge or about a half hour in the freezer) before adding to cooler.
(3) Add a sprig of rosemary before serving.